Lua APA (7ú heag.)
ebrary, Inc, & Ritrovato, P. (2005). Towards the learning grid: Advances in human learning services. IOS Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Pierluigi Ritrovato. Towards the Learning Grid: Advances in Human Learning Services. Washington, DC: IOS Press, 2005.
Lua MLA (9ú heag.)
ebrary, Inc, agus Pierluigi Ritrovato. Towards the Learning Grid: Advances in Human Learning Services. IOS Press, 2005.
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